Specializing in the design and manufacture of automotive motor armatures and stators.

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Basic knowledge of fuel pump armature

Release Time:

2022-09-22

   Fuel pump armature It is a key component in the process of electromechanical energy conversion in a motor. For a generator, it is the component that generates electromotive force. Below is some basic knowledge about fuel pump armatures.

  The fuel pump armature is the part of the motor that has coils, and the coils move relative to the magnetic field. In a generator, it generates induced electromotive force in the coils, and the coils rotate under force to generate electricity. In a motor, the energized coils are subjected to Ampere force in the magnetic field, causing them to rotate in the magnetic field. In fact, in the mid-19th century, the term was used for inductors, i.e., the support of magnets. Since everyone will use fuel pump armatures, you need to know that components of an alternator or related equipment can be represented mechanically or electrically. Although these two sets of terms are distinctly separate, they are often used interchangeably, or a combination of mechanical and electrical terms may be included. Confusion may arise when using composite machines such as brushless alternators, or when conversing among people accustomed to using differently configured machines. In fact, in most fuel pumps, the magnetic field is rotating and is part of the rotor, while it is stationary and part of the stator.

  The fuel pump armature is generated by excitation. In both generating and motor modes, it carries current and produces what is called armature flux. The effect of armature flux on the main magnetic field is called armature reaction. Well, at this point, the reaction is that the demagnetizing effect can be overcome by adding extra ampere-turns to the main magnetic field windings. The fuel pump armature has common magnetic poles to reduce cross-magnetization effects. In amplifier rotating amplifiers, armature reaction is essential. In addition, it is also necessary to know that the reduction of armature reaction force is the impact on the main pole flux distribution of the generator. Of course, this is mainly because the armature is wound, so whenever current flows through the wire, the armature forms a magnetic field. At right angles, this is called cross-magnetization of the fuel pump armature. The effect of the armature field is to distort the generator magnetic field and move the neutral plane. Or in the neutral plane, the armature windings move parallel to the magnetic field lines, which is why the axis located in this plane is called the magnetic neutral axis (MNA). This effect is called armature reaction and is proportional to the current flowing in the armature windings.


Fuel pump armature

02-09

2023

Introduction to the role of the stator and rotor in a brushless motor - collect this information!

The stator and rotor of a brushless motor consist of permanent magnets with a certain number of magnetic poles embedded in or on the surface of the iron core. Most permanent magnets are made of rare-earth permanent magnet materials with high coercivity, such as neodymium, iron, and boron, and high magnetic permeability and magnetic induction density. The rotor magnets are similar to those in brushed motors; both produce a sufficient magnetic field in the air gap of the motor. The difference is that the permanent magnets in brushed motors are mounted on the rotor, while those in brushless DC motors are mounted on the stator. The rotor system structure of brushless DC motors often adopts different surface-mounted magnets, also known as tile magnets, with radially magnetized tile-type permanent magnets bonded to the outer surface of the iron core. Through reasonable design, a square-wave air gap magnetic flux density can be obtained. What is the injection molding process for the stator and rotor of a brushless motor? Metal inserts are placed in the mold, and then BMC plastic is injected and heated to 160 degrees. The power of the motor should be selected according to the power required by the equipment, so that the motor operates under rated load as much as possible. Two points should be noted when selecting: (1) If the motor power is too small, a "small horse pulling a large cart" phenomenon will occur, causing the motor to be overloaded for a long time and damaging it.

01-30

2023

What are the components of a starter motor armature?

The control device of the starter armature includes an electromagnetic switch, a starter relay, and an ignition start switch, etc., among which the electromagnetic switch is made together with the starter armature. I. Electromagnetic switch 1. Structural characteristics of electromagnetic switch The electromagnetic switch is mainly composed of an electromagnetic iron mechanism and a motor switch. The electromagnetic iron mechanism is composed of a fixed iron core, a moving iron core, an attracting coil, and a holding coil. The fixed iron core is fixed, and the movable iron core can move axially in the copper sleeve. The front end of the movable iron core is fixed with a push rod, and the front end of the push rod is provided with a switch contact plate. The rear end of the movable iron core is connected to the fork through an adjusting screw and a connecting pin. The reset spring is arranged outside the copper sleeve to reset the movable parts, such as the movable iron core. 2. Working principle of electromagnetic switch When the directions of the magnetic fluxes generated by energizing the attracting coil and the coil are the same, their electromagnetic attractions overlap each other, and the moving iron core can be attracted to move forward. The pad at the front end of the push rod until the electrical switch contacts are connected to the motor main circuit. When the magnetic pain caused by the energization of the attracting coil and the coil is in the opposite direction, their electromagnetic attractions cancel each other out. Under the action of the reset spring, the movable iron core and other movable parts automatically reset, the pads and contacts are disconnected, and the motor main circuit is disconnected. II. Starting relay

01-10

2023

What is the manufacturing method for the starter armature structure?

The starter armature structure can increase the energization time of the starter and avoid the problem of short circuit caused by the ablation of the copper wire winding after the armature is energized for a long time, thus ensuring the safety of the circuit. The starter armature structure includes an armature shaft, an armature winding, an iron core and a commutator. The armature winding includes an end winding i arranged away from the commutator. The end winding i is provided with a U-shaped portion, and the U-shaped portion is provided with an insulating sleeve. The melting point of the insulating sleeve is higher than 200 ℃. The iron core is fitted on the armature shaft, and the iron core is provided with a winding slot i, and the armature winding is embedded in the winding slot i. An insulating piece i is set in the winding slot i to isolate the armature winding from the iron core and the edges of the components of the armature winding. The insulating piece i has an S-shape structure to wrap the edges of the components of the armature winding. The commutator is fitted on the armature shaft and is arranged near the end of the armature shaft. The commutator is provided with a winding slot ii. The armature winding also includes an end winding ii, which is arranged near the commutator and embedded in the winding slot ii. The end winding ii is composed of an inner ring layer and an outer ring layer, and an insulating element ii is arranged between the inner ring layer and the outer ring layer to isolate the inner ring layer and the outer ring layer. The clamping ring is also fitted at a position corresponding to the winding slot ii on the commutator. The insulating sleeve is made of glass fiber. Compared with the existing technology, this invention

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